Derrick attachment for road rollers



J. MASCETTI.

DERRICK ATTACHMENT FOR ROAD ROLLERS.

APPLICATION FILED OCT. 27, 1920.

1 423,724, Patented July 25, 1922.

INVENTOR M C%a4c42& B 4 I I! ATTORNEY FATE Fl llill JOSEPH MASCETTI, FTOR-RINGTON, CONNECTICUT, ASSIGNOR TO MASCETTI & HOLLEY, OF TOBRINGTON,CONNECTICUT, A COPARTNEESI-IIP CONSISTING 015 JOSEPH BIASCETTI ANDIRVING .B. HOLLEY.

earse,

Specification of Letters Patent.

Patented July 25, 1? 22;

Application filed October 27, 1920.1 SerialNoa 419,860.

To all wlzomizfi may concern:

Be itlknown that 1,5osnrrr llflasonr'rr, a citizen of the United States,residing at Torrington, county ,of Litchiield, State of Connecticut,have invented an Improvement in Derrick Attachments for Road Rollers, ofwhich the following is a specification.

This invention relates to a derrick attaohment capable of readyconnection to'a vehicle-such as a road roller, tractor or truck havingpower capable or driving ahoisting drum.

An object of the invention is to provide a derrick which can be made asa unit and sold as such for the. ready installation on andrenioval fromvehicles of heavy ICOI1 struction.

Another object is ,toembody in the connections to the vehicle adjustmentmeans capable of moving the mast of the derrick into a position where itshall be plumb regardless of the longitudinal or lateral angle at whichthe vehicle is standing.

Still another object is to provide .means for supporting the derrickmast and for relieving the pressure on the structure of the vehicle whenthederrick is innse.

Other objects and advantages of the invention will become apparent inconnection with the following description of the accompanying drawing,forming a part of this specification in which:

Fig. 1, is an elevational view of a. vehicle such as a road roller withthe derrick attachment applied thereto;

Fig. 2 is an end elevational, view of the same, and

Fig. 3 is a detailed partial sectional view of the pivoted support forthe mast on'an enlarged scale.

The vehicle illustrated is known as a steam road roller and has theusual wheels and 11 carrying a bodyv portion 12 carrying a boiler'13,engine. 1% and coal bunker 15 with other partsof-vsuchmachine.

A thrust bearing 16 comprising a bracket portion 17v is provided andmaybe bolted to the coal bunker 15v at the lower corner or correspondingportion ofthe vehicle. It being necessary; to :attach; thisubearlng aslow as possible and commonly below the shaft carrying the rear wheels11. :Upon the upper portion of 16 a spherical bearing 16- is placedtoreceivethe corresponding spherical thrust bearing of the short verticalshaft 18 formed integral with thev base plate 19.

In the base plate the mast 20 is securely fastened while at the forwardportioirof the base plate a pivotal connection 21 is formed for unitingthe boom 32 to the base plate.

At the head of the mast 20 a cap23 is fastened securely and carries acentral pivot 24-. The cap haspivotally connected to it a pulleyblock 25carrying the boom hoist rope 26 running throughthe pulley block 27 at,the head of the boom. Rope 26 is fast to pulley 2'? and after runningthrough the blocks is fastened to the cleat 28 on the mast. The hoistingof the boom is manually performed but the rope may be carried around thedrum later mentioned.

The pulley block 27 is carried by a clamp 29 at the head of the boom 22which carries a pulley block or sheave 30 around which the hoistingcable 31 is carried. Cable 31 is fastat one end to; sheave 32, with hook323, and is carried overpulley S l set in the boom end and from there tobracket pulley 35. The cable is then led to the foot of the mastwhere apulley 36 is carried in the base plate19, and then over the bracketpulley 37 to the dru1n-38 which, is driven by the engine shaft. Thisdrum in some cases may .be attached to the engine fly wheel shaft. andmaintained there or it may replace temporarily the drivingpulleycommonly suppliedon tractors. In cases where a clutch is not present,one must be supplied in connection with the drum-38.

The stiff leg connecting plate is carried by the pivotQt at the head ofthe mast and. is keyed; to the pivot 2 L or otherwise fastenedthereto soas; not to turn thereon.

'r L cotter pin l6v is supplied for preventing plane. The lower ends ofthe stiff legs are supplied with means to pivotally connect them througha universal joint 51, which may likewise be omitted, to crossheads 52and movable in crosshead slides 5 1- and 55. Cranks 56, and screws 57passing through the castings carrying the crosshead slides serve as ameans for positioning the crossheads, the stiff legs and the head of themast. The casting for the. crosshead slides is provided with flanges sothat it may be bolted or riveted to the boiler 14; or elsewhere. Themoving of the lower ends of the stiff legs 49 and 50 may be done inseveral ways that described being merely illustrative.

In order to stabilize the road roller and the derrick in handling theheaviest loads, a strut carried by a bearing support 58, having anenlarged foot portion, is provided with connecting means 59 which admitsof hanging the support 58 on the hook 60 when not in use. .The bearingsupport here shown is in the form of the well known jack-screw whoseoperation and application is well understood.

As described the derrick attachment is one which may be made and soldfor use on a variety of vehicles and the connections and supports aresuch that material modification of the vehicle or derrick is unnecssary.

The manipulation of the stiff legs through the cranks 56 will bedescribed. As a vehicle suitable to carry such a derrick is seldomrested exactly level with no lateral or lengthwise tilt it occurs thatthe mast will have a considerable and exaggerated displacement and thatin hoisting this offset position of the head of the mast will betroublesome in handling heavy loads. The tipping incident to amast outof plumb is avoided by moving the head of the mast until erectness isobtained. The spherical surfaces on the shaft- 18 and on the bearing 16permit of the swing ing of the mast so as to bring it from an obliqueposition to an erect one.

.As shown in the drawing'the center lines represent the position of themast when the vehicle is not level, assuming that the vehicle is on asurface denoted by the nearly horizontal centre line. With the masttilted it is obvious that by manipulation of the screws 57 the head ofthe mast, being connected to the crossheads by the stiff legs, can bebrought directly over the bearing at the foot of the mast. The crank onone side is cooperatively moved with the crank on the other side.Locking means 61 coacting with the screws 57 hold the parts in desiredposition. Any angle of tilt can then be avoided and when the mast iserect the support 58 or strut is placed under the mast bearing, andhoisting operation commenced.

The attachment is shown connected to the road roller at one corner,while this is the most convenient place for various reasons, theattachment may be connected elsewhere.

While but a single form of this invention has been described, others arecontemplated and 'no limitation is to be placed upon the invention bythe foregoing description which is intended to refer directly to allpossible embodiments of the invention.

Having thus described my invention, 1 claim:

1. In a vehicle-derrick the combination of a mast, a mast bearingconnected to the vehicle, stiff legs connected to said mast andextending therefrom to said vehicle at points spaced apart, connectionsat the vehicle end of the stifl legs, and means for independentlyadjusting and holding the ends in adjusted position.

2. In a vehicle-derrick the combination of a mast, a base plate for saidmast, a spherical bearing for said mast, stiff legs extending from thevehicleto the mast, means for moving said ends and means for holding theends at different distances from the mast.

3. in a vehicle-derrick the combination of a mast, a lower bearing forsaid mast, a connection member at the head of the mast, stifi legsextending between the connection member and the vehicle, and means forindependently adjusting said legs toward and away from said mast attheir body ends.

at. In a vehicle-derrick the combination of a mast, a lower bearing forsaid mast on which it is mounted to turn, a base plate therefor, asupport therefor, and means for varying the height at which'said supportmay be applied.

5. In a vehicle-derrick the combination of a mast, a bearing for themast on which it is mounted to turn, a base plate therefor, and asupporting member for said base plate adjustable in a verticaldirection.

6. In a vehicle derrick the combination of a motor, a drum connectedthereto, a mast, a boom, hoisting gear on the boom and mast operatedfrom the drum, a bearing for the mast and boom, a base plate therefor, asupporting member for said base plate adjustable in a verticaldirection, and a set of stiff legs connected to the vehicleandadju'stable individually and maintaining the mast vertical in allpositions of the vehicle.

7. In a vehicle-derrick the combination of a mast, a boom, hoisting gearon said boom and mast, a drum, actuating means therefor, said hoistinggear being connected to said drum, a bearing for said mast and boom,stiff legs connected to the mast and separately adjustable by co-relatedmovement from points on the vehicle distant from each other andmaintaining the mast in a vertical position, and means for separatelyadjusting said legs.

8. In a vehicle-derrick the combination of a derrick mast carried by abearing attached able to a motor vehicle, stiff legs connected to themast near its top and controlling the position thereof in alldirections,'connect1ng means attached to the other ends of thestiff legsfor fastening the stiff legs to a motor vehicle, said connecting meansalso lncludmg means for ad usting said ends.

10. In an attachable derrick for motor vehicles in combination, a mast,a bearing therefor, a bearing support, stiff legs, a connecting membernear the head of the mast at the upper ends of the stiff legs, attachingmeans at the other ends of the stifi legs whereby the derrick may bereadily connected to a motor vehicle, and positively acting means forpositioning the ends of said legs.

11. In an attachable derrick for motor vehicles in combination, a mast,a bearing therefor, a bearing support, an adjustable strut for thebearing support, attachment means for connecting the bearing support tothe motor vehicle, stiff legs extending from the head of the mast to thevehicle, connecting means thereon, and position adjusting means on saidconnection.

12. In an attachable derrick for motor vehicles in combination, a mast,a bearing therefor, a support for said bearing, means for attaching saidsupport to a motor vehicle, a pivot member at the head of the mast, astiff leg connecting member thereon, stiff legs extending therefrom,means for attaching the ends of the stiff legs to parts of a motorvehicle, and position adjusting means thereon for varying the distancefrom the mast pivot to the attaching means,

13. In an attachable derrick for motor vehicles in combination, a mast,a mast bearing, a support and attaching means for said bearing, a pivotat the head of the mast, stiff leg connecting means attached thereto, alongitudinally adjusting stiff leg, and a transversely adjusting stiffleg, means for corn.

necting the ends of the stiff legs to a vehicle, and position adjustingmeans for the ends of the stiff legs, said position adjusting meansforcing the upper ends of the stiff legs by co-operative movement toa-position dependent upon the motion of both stiff legs and therebymaintaining the mast in a position incident thereto.

14. In an attachable derrick for motor vehicles in combination, a mast,a mast bearing, a bearing support With attachment means thereon, a pivotat the head of the mast, connecting means thereon, stiff legs attachedthereto, connection means at the other. end of the stiff legs, and meansthereon for giving the head of the mast a forward and backward movementand a sidewise movement resulting in maintaining the mast in verticalposition.

In testimony whereof I affix my signature.

JOSEPH MASO'ETTI.

